#include <REGX52.H>

void Delay1ms(unsigned int xms)		//@11.0592MHz
{
	unsigned char i, j;
	while(xms)
	 {
	i = 2;
	j = 199;
	do
	{
		while (--j);
	} while (--i); 
		 
		 xms--;
	 }

}


void main()
{
	
while(1)
	{
		P2=0xFE;//1111 1110
		Delay1ms(1);
		P2=0xFD;//1111 1101
		Delay1ms(10);
		P2=0xFB;//1111 1011
		Delay1ms(100);
		P2=0xF7;//1111 0111
		Delay1ms(1000);
		P2=0xEF;//1110 1111
		Delay1ms(1000);
		P2=0xDF;//1101 1111
		Delay1ms(100);
		P2=0xBF;//1011 1111
		Delay1ms(10);
		P2=0x7F;//0111 1111
 		Delay1ms(1);
		
		Delay1ms(10);
	}
	

}